David McCallum, best known for his role as Ducky on "NCIS," passed away at the age of 89 on September 25, 2023. He had an extensive career in the entertainment industry, including his prominent role on "The Man from U.N.C.L.E." in the 1960s. McCallum also lent his voice to various DC animated projects, notably portraying Alfred Pennyworth in three films. He also appeared in "Batman: The Brave and the Bold" as Merlin and voiced Zeus in the animated film "Wonder Woman." McCallum's animated work became a significant part of his filmography in later years.